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<== Date ==> <== Thread ==>

Subject: gdct on Linux
From: "Brian McAllister" <brian@hotrats.mit.edu>
To: tech-talk@aps.anl.gov
Cc: brian@hotrats.mit.edu
Date: Fri, 05 Jan 2001 14:46:10 -0500
I've been trying to build gdct313 on Linux (Redhat 4.2, gcc 2.7.2.1.f.1),
but I can't get it to run.  I'm looking either for help on making this
work, or a working executable from somewhere.

So far:

I got Interviews through the EPICS web page (iv_epics_3.1.tar.gz).
I poked around the Interviews web pages and found some patches and hints
for Linux, mostly having to do with X Config issues.
I have compiled Interviews, with the only significant problem being the use
of "xor" as a variable/function name, solved by renaming those items.

gdct313 compiles and links cleanly, but when I run it, it gets a
segmentation fault before it even gets into main(), apparently somewhere in
the dynamic library handling.

Here's the gdb output:

GDB is free software and you are welcome to distribute copies of it
 under certain conditions; type "show copying" to see the conditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.16 (i586-unknown-linux), Copyright 1996 Free Software Foundation, Inc...
(gdb) run
Starting program: /home/locus/epicsdev/extensions/src/gdct313/free_gdct/O.Linux/
gdct313
warning: Unable to find dynamic linker breakpoint function.
warning: GDB will be unable to debug shared library initializers
warning: and track explicitly loaded dynamic code.

Program received signal SIGSEGV, Segmentation fault.
0x401affeb in strcpy ()
(gdb) bt
#0  0x401affeb in strcpy ()
#1  0x40001f8c in _dl_interpreter_exit ()
#2  0x804c5b3 in _start ()
(gdb)

----
Brian McAllister                    Controls Programmer/Beam Physicist
mcallister@mit.edu                        MIT-Bates Linear Accelerator
(617) 253-9537                                           Middleton, MA


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